<template>
  <div>
    <!-- 头部面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片内容区域 -->

    <el-card>
      <!-- 添加角色按钮 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>

      <!-- 角色列表信息 -->
      <el-table :data="roleslist" border stripe>
        <el-table-column type="expand">
          <tempalte slot-scope="scope">
            <el-row
              :class="['bdbottom', i1===0 ? 'bdtop':'','vcenter']"
              v-for=" (item1, i1) in scope.row.children "
              :key="item1.id"
            >
              <!-- 一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightsById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <el-col :span="19">
                <!-- 二级权限 -->
                <el-row
                  :class="[ i2===0 ? '':'bdtop','vcenter']"
                  v-for="(item2,i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightsById(scope.row,item2.id)"
                    >{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <!-- 三级权限 -->
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="(item3, i3) in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightsById(scope.row,item3.id)
                      "
                    >{{item2.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>

            <!-- <pre> {{ scope.row}}</pre> -->
          </tempalte>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <!-- 修改  -->
            <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
            <!-- 删除 -->
            <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
            <!-- 分配权限 -->
            <el-button
              type="warning"
              icon="el-icon-setting"
              size="mini"
              @click="showAddRightsDialog(scope.row)"
            >分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 分配权限的对话框 -->

    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <el-tree
        :data="rightslist"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defkeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 所有角色列表
      roleslist: [],
      //  默认分配权限的关闭状态
      setRightDialogVisible: false,
      //  所有权限的数据
      rightslist: [],
      // 树形控件的属性
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      defkeys: [],
      //   当前即将分配权限的 id
      roleId: ''
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    //  获取权限列表
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }

      this.roleslist = res.data
      console.log(this.roleslist)
    },
    // 根据id删除用户权限
    async removeRightsById(role, rightId) {
      const confirmRights = await this.$confirm(
        '此操作将永久删除该文件, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      if (confirmRights !== 'confirm') {
        return this.$message.error('取消了删除！')
      }

      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      )
      if (res.meta.status !== 200) {
        return this.$message.error('取消权限失败！')
      }
      role.children = res.data
      this.$message.success('权限取消成功！')
    },
    // 分配权限度
    async showAddRightsDialog(role) {
      this.roleId = role.id
      // 获取权限列表数据
      const { data: res } = await this.$http.get('rights/tree')
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败！')
      }
      this.rightslist = res.data
      console.log(this.rightslist)

      this.getLeafKeys(role, this.defkeys)
      this.setRightDialogVisible = true
    },
    // 获取所有三级节点的id
    getLeafKeys(node, arr) {
      if (!node.children) {
        // 如果当前节点不包含children属性则就是三级节点
        return arr.push(node.id)
      }

      node.children.forEach(item => {
        this.getLeafKeys(item, arr)
      })
    },
    // 监听分配权限对话款哪个的重置状态
    setRightDialogClosed() {
      this.defkeys = []
    },
    //点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')

      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      )

        console.log(res);
    
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功！')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
